Class: ManageEngine::APMMetricsParser

Inherits:
Object
  • Object
show all
Defined in:
lib/agent/metrics/am_metricsparser.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ APMMetricsParser

Returns a new instance of APMMetricsParser.



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# File 'lib/agent/metrics/am_metricsparser.rb', line 6

def initialize
  @obj = ManageEngine::APMObjectHolder.instance
end

Instance Method Details

#getDBData(tracker, tdata, exceptionInfo) ⇒ Object

Generates DB metric



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# File 'lib/agent/metrics/am_metricsparser.rb', line 152

def getDBData(tracker, tdata, exceptionInfo)
  while (tracker != nil)
      tdata["db"] = getDBData(tracker.child, tdata, exceptionInfo)
    
    if tracker.kind_of?(ManageEngine::Tracker::DatabaseTracker)
        if tdata["db"] == nil
          tdata["db"] = Array.new
        end
        
        queryInfo = tracker.getQueryInfo
        sqlStrip = queryInfo[0] + "/" + queryInfo[1] + "/dummydb"
  
        ret ={"rt"=>tracker.duration, "sql"=>tracker.getRawQuery,
              "sql-strip"=>sqlStrip, "name"=>tracker.name, "operation"=>queryInfo[0]}
        
        if (tracker.error?)
          ret["error"] = true
        end
        
        tdata["db"].push(ret)
    end ## DBTracker check
    
    if (tracker.error?)
        updateExceptionMetric(tracker.error, tdata) # <= previously it was 'ret'
        updateExceptionInfo(exceptionInfo, tracker.endtime.to_i, tracker.error)
    end
    
    tracker = tracker.sibling
  end ## while loop
  
  tdata["db"]
end

#getDummyTrace ⇒ Object 



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# File 'lib/agent/metrics/am_metricsparser.rb', line 115

def getDummyTrace
  top = Array.new
  path = @obj.constants.mf_overflow
  det = {"thread_name"=>"rorthread","s_time"=>0,"t_name"=>path,"r_time"=>0,"thread_id"=>141}
  trData = Array.new
  trData[0] = 0
  trData[1] = path
  trData[2] = ""
  trData[3] = 0
  trData[4] = 0
  trData[5] = nil
  trData[6] = Array.new
  top[0] = det
  top[1] = trData
  return top
end

#getTrace(rootTracker) ⇒ Object 



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# File 'lib/agent/metrics/am_metricsparser.rb', line 216

def getTrace(rootTracker)
  trace = Array.new
  traceDetails(rootTracker, trace)
  
  return trace[0]
end

#getTransData(rootTracker, tdata) ⇒ Object 



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# File 'lib/agent/metrics/am_metricsparser.rb', line 132

def getTransData(rootTracker, tdata)
  ret = nil;
  begin
      if(tdata.has_key?("td"))
        ret = tdata["td"]
        ret["rt"] = ret["rt"] + rootTracker.duration
      else
        ret = {"rt"=> rootTracker.duration, "path"=>rootTracker.url}
        if (rootTracker.error?)
          ret["error"] = true
        end
      end
  rescue Exception=>e
    #@obj.log.logException "Exception in getTranseData: #{e.message}",e
    raise e
  end
  ret
end

#parse(data) ⇒ Object

Invoked by APMWorker in dc



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# File 'lib/agent/metrics/am_metricsparser.rb', line 11

def parse(data)
  @obj = ManageEngine::APMObjectHolder.instance
  parseddata = Hash.new
  begin
    data.each do |txn_name, seqBag|
      @obj.log.debug "[Processing started for - #{txn_name} ]"
      
      seqBag.each do |seqData|
        begin
          tdata = Hash.new #transaction data -> rt, path,..
          exceptionInfo = Array.new # data to be sent in trace as 'loginfo'
        
          rootTracker = seqData["roottracker"]
          
        tdata["td"] = getTransData(rootTracker,tdata)
        tdata["db"] = getDBData(rootTracker, tdata, exceptionInfo)
          
        exceptionBag = seqData["exceptions"]
        if exceptionBag != nil
          exceptionBag.each do |exceptionRecord|
            updateExceptionMetric(exceptionRecord.exception,tdata)
            updateExceptionInfo(exceptionInfo, exceptionRecord.time, exceptionRecord.exception, exceptionRecord.message)
          end
        end
        
        parseddata = updateParsedData(txn_name, tdata.dup, parseddata)
          
          if @obj.config.trans_trace && (rootTracker.duration >= (@obj.config.trans_trace_t.to_f*1000).to_i || rootTracker.error?)
            parseddata = updateTraceData(rootTracker, parseddata, exceptionInfo)
          end
        rescue Exception=>e
          @obj.log.logException "Exception in Parsing txn #{txn_name}",e
        end
      end # do - seqBag
      
      @obj.store.removeData txn_name
      @obj.log.debug "[Processing END for - #{txn_name} ]"
    end # do-loop
  rescue Exception=>e
    @obj.log.info "Exception : #{e}"
    @obj.log.logException "#{e.message}",e
  end
#     @obj.log.debug "[PARSER] End"
  
  parseddata
end

#traceDetails(tracker, traceArr) ⇒ Object 



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# File 'lib/agent/metrics/am_metricsparser.rb', line 223

def traceDetails tracker, traceArr
  
  siblingDuration = 0
  
  while tracker != nil
    
    childTrace = Array.new
    childDuration = traceDetails tracker.child, childTrace
    
    traceItem = Array.new
    traceItem[0] = tracker.starttime
    if tracker.kind_of?(ManageEngine::Tracker::DatabaseTracker)
        queryInfo = tracker.getQueryInfo
        traceItem[1] = queryInfo[0] + " - " + queryInfo[1]
      else
        traceItem[1] = tracker.name
    end
    traceItem[2] = ""
    traceItem[3] = tracker.duration
      traceItem[4] = tracker.duration - childDuration
      traceItem[5] = tracker.getAdditionalInfo
    traceItem[6] = childTrace.empty? ? nil : childTrace
    
    traceArr.push(traceItem)
    
    siblingDuration += tracker.duration
    
    tracker = tracker.sibling
  end
  
  return siblingDuration
end

#updateExceptionInfo(exceptionInfo, time, error, message = nil) ⇒ Object 



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# File 'lib/agent/metrics/am_metricsparser.rb', line 58

def updateExceptionInfo (exceptionInfo, time, error, message = nil)
    logInfo = { @obj.constants.mf_loginfo_time => time,
                  @obj.constants.mf_loginfo_level => @obj.constants.mf_loginfo_level_warn,
                  @obj.constants.mf_loginfo_str => message != nil ? message : error.message,
                  @obj.constants.mf_loginfo_err_clz => error.class.to_s,
                  @obj.constants.mf_loginfo_st => @obj.util.formatStacktrace(error.backtrace) }
    exceptionInfo.push(logInfo)
end

#updateExceptionMetric(exception, tdata) ⇒ Object 



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# File 'lib/agent/metrics/am_metricsparser.rb', line 185

def updateExceptionMetric (exception, tdata)
  excData = tdata["exception"]
  if (excData == nil)
    excData = Hash.new
    tdata["exception"] = excData
  end
  
  excData[exception.class.to_s] = excData[exception.class.to_s].to_i + 1
  excData[@obj.constants.mf_logmetric_warning] = excData[@obj.constants.mf_logmetric_warning].to_i + 1
end

#updateExclusiveTrace(data) ⇒ Object 



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# File 'lib/agent/metrics/am_metricsparser.rb', line 257

def updateExclusiveTrace data
  childs = data[6]
  childs.each do |arr|
    data[4] = data[4] - (updateExclusiveTrace arr)[3]
  end
  data
end

#updateParsedData(key, tdata, parseddata) ⇒ Object 



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# File 'lib/agent/metrics/am_metricsparser.rb', line 67

def updateParsedData (key, tdata, parseddata)
  begin
    if parseddata.has_key?(key)
      key = rand # Use a random number
    end
    #@obj.log.debug "Update parsed data  : #{key} = > #{tdata}"
    parseddata[key]=tdata
  rescue Exception=>e
    @obj.log.info "Exception in updateParsedData: #{e}"
    @obj.log.logException "#{e.message}",e
  end
    parseddata
end

#updateTrace(url, trans, exceptionInfo) ⇒ Object 



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# File 'lib/agent/metrics/am_metricsparser.rb', line 196

def updateTrace(url, trans, exceptionInfo)
#     {"thread_name":"http-8080-6","s_time":1326276180289,"t_name":"transaction\/http\/Test-App\/login","r_time":18,"thread_id":141}
  top =  Array.new
  path = @obj.constants.mf_transaction + @obj.constants.mf_separator + url
  det = {"thread_name"=>"rorthread","s_time"=>trans[0],"t_name"=>path,"r_time"=>trans[3],"thread_id"=>141}
  
  exception = trans[5] != nil ? trans[5][@obj.constants.mf_exception_st] : nil
  if (exception != nil)
    det[@obj.constants.mf_err_st] = exception
  end
  
  if (exceptionInfo.length > 0)
    det[@obj.constants.mf_loginfo] = exceptionInfo
  end
  
  top[0] = det
  top[1] = trans
  top
end

#updateTraceData(rootTracker, parseddata, exceptionInfo) ⇒ Object

Generates Trace for the transaction and updates it in ‘parseddata’ hash



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# File 'lib/agent/metrics/am_metricsparser.rb', line 82

def updateTraceData(rootTracker, parseddata, exceptionInfo)
  if(parseddata.has_key?("trace-data"))
    tData = parseddata["trace-data"];
    if(tData.length == @obj.config.trace_overflow_t)
      trac = getDummyTrace
      tData.push(trac)
      parseddata["trace-data"]=tData
      @obj.log.debug "dummy trace added"
      return parseddata
    elsif tData.length > @obj.config.trace_overflow_t
      @obj.log.debug "trace threshold exceeded. Current Size: #{@obj.config.trace_overflow_t}"
      return parseddata
    end
  end
  begin
  trdata = getTrace(rootTracker)
  trac = updateTrace(rootTracker.url, trdata, exceptionInfo)
  if(parseddata.has_key?("trace-data"))
    traceData = parseddata["trace-data"];
    traceData.push(trac);
    parseddata["trace-data"] = traceData;
  else
    traceData = Array.new
    traceData.push(trac)
    parseddata["trace-data"] = traceData;
  end
  rescue Exception=>e
    @obj.log.info "Exception in updateTraceData: #{e}"
    @obj.log.logException "#{e.message}",e
  end
        parseddata
end